package com.anmingle.utils;

import com.alibaba.fastjson.JSONObject;

import java.io.*;
import java.net.URL;
import java.net.URLConnection;

/**
 * @author 安明乐
 * @Title Request
 * @Package IntelliJ IDEA
 * @date 2022/12/6 11:03
 */
public class RequestUtils {


    /***
     * Get请求
     * @param url 地址
     * @return
     */

    public static String GET(String url) {
        String result="";
        BufferedReader in = null;
        InputStream is = null;
        InputStreamReader isr = null;
        try{
            //构造url对象
            URL realUrl = new URL(url);
            //获取一个对应该URL的URLConnection对象
            URLConnection conn = realUrl.openConnection();
            is = conn.getInputStream();
            isr = new InputStreamReader(is);
            in = new BufferedReader(isr);
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        }catch (Exception e){
            e.printStackTrace();
            System.out.println("异常出现");
        }
        //关闭资源
        finally {
            try {
                if (in != null) {
                    in.close();
                }
                if (is != null) {
                    is.close();
                }
                if (isr != null) {
                    isr.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
                System.out.println("出现异常");
            }
        }
        return result;
    }


    /***
     *   Post 请求
     * @param url 地址
     * @param param 参数
     * @return
     */
    public static String Post(String url, JSONObject param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            //设置Content-type 为 application/x-www-form-urlencoded
            conn.addRequestProperty("Content-type", "application/x-www-form-urlencoded");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应

            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }
}
